Hobby Projects - Insulation tester, LED Circuits, Meters.

Thursday, April 14, 2011

Phoenix Science Experiments

PMDK is an easy-to-use, low cost micro-controller development system. The hardware consists of an ATmega16MCU, LCD display and regulated DC supply. All the I/O pins of the MCU are available on sockets.

Phoenix Science Experiments

Phoenix Science Experiments

Different sensors elements can be interfaced and accessed by few lines of Pythoncode. Phoenix utilizes the power of personal computers for experiment control, data acquisition and its mathematical analysis.

The instrument is designed using locally available low cost components and the design is freely available for commercial production. Design supports hardware plug-in modules for expansion. Phoenix is developed using Free Software tools.

The serial and USB versions can be easily interfaced to a PC. They can also be programmed through the serial/USB ports after uploading a bootloader program to ATmega16.

Wednesday, April 13, 2011

Amateur Radio and Calculators for Electronics

John Owen has made Enriching Electronics Pages at vwlowen.co.uk. There are many Ham Radio projects too.

Amateur Radio and Calculators for Electronics

A highlight is the "Build A PICAXE Weather Station." This is quite Exhaustive and Detailed.

Build a Project

Starting Electronics - a simple first project.

Here he teaches in simple tongue, The method and steps to towards the first project and that too, with the Sacred SG555 Timer.

Collection of calculators, ready-reckoners

Here is where he dazzles, He has developed very useful Calculators to make your Numbers Game a Piece of Cake.

MiscEl - Many Electronic Calculations

A swiss army knife for the Electronic enthusiast. This single program packs many applets that help you overcome the Formula Amnesia and even Poor Math Skills.

MiscEl - Many Electronic Calculations

The program contains a lot of pages with different electronic calculations. Each page contain one or more different calculations.

MiscEl - Many Electronic Calculations

Science calculators are on Geometry and Periodic table. Some Electronic Calculators are shown below
  • TinyCalc Can do the same as the entry line in Calculator, but is very small when pulled out.
  • Ohms law Ohms law, impedance of capacitor and inductors, complex power
  • Waveforms Calculates RMS, mean, PEEK, DC, FFT for different waveforms.
  • Thermo sensors Calculates for PT100, NTC and all types of thermocouples
  • Series/parallel Calculate/design series/parallel connection of resistors, capacitors and inductors

Tuesday, April 12, 2011

Radiocalc or dBcalc - Conversions RF Engineering

Besides classical functions and dB conversions, RadioCalc includes a converter of Power to field strength commonly used for EMC/EMS test-set-up. Also impedance can be represented as a function of reflection coefficient (somehow like an electronic Smith-chart). This and many other functions are obtained by clicking into the arrow of the "Conversion off" window.

Radiocalc - Convertisseur Radio Universel

Radiocalc - Convertisseur Radio Universel

Thanks to RadioCalc the different dB charts are obsolete by computing the ratios of Power (W) or Voltages (V) according to dB = 10*log(P2/P1) ou dB = 20*log(V2/V1).

Just for a trial : type 100/10 (or just 10) and push the dB button as the 'W' mode is chosen, the result will be 10 dB, then choose the 'V' mode by clicking in the V button (in the Quick dB window) push again dB, the result is now 20 dB.

From - Temcom - Consulting for test & measurement and electronics in France
(This was Earlier Radiocalc, i have now updated the link to the new site in France)

Monday, April 04, 2011

GM Arts – Music Guitar Science

This site is offered in the hope that readers will better understand electric guitar technology, leading to creative use of your musical tools. Of course, only practice will improve your musical vocabulary and articulation....

GM Arts - Music Guitar Science

"Hello World! I live in Adelaide, South Australia, and my interests are electric guitar, playing live music, writing MIDI sequences, programming in Visual Basic, dabbling in electronics, with a casual interest in popular science. I have some years of experience in these fields, and use these Web pages to share my knowledge freely. .."

GM Arts – Music Guitar Science

Electric Guitar

Most musical instruments and their amplification systems, such as those used for public address (PA), recording and hi-fi are designed to reproduce sound as accurately as possible. Electric guitar and its amplification is completely different: every item in the guitar signal chain is designed to modify the raw guitar signal in some way.
  • Guitar Amplifiers - valves vs transistors, some overdrive circuit ideas.
  • Guitar Pickups - get the most out of them alone and in combination,
  • MIDI Music - A guide on MIDI messages, circuit for a PC-MIDI interface.
Related Resources -
  • Pickup Winder Web Page
  • Overdrive schematics - partial designs
  • Pickup wiring and switching ideas